baber/WOPTO huggingface dataset:
Patent GB-830578-A (GB)
Title: New or improved method and means for collecting water in wells sunk in silty subsoil
IPC: E03B3/10
Filed: 1958-01-17
Abstract: 830,578. Drainage. CLAUSSE, P. Jan. 17, 1958 [Jan. 17, 1957], No. 1727/58. Class 33. [Also in Group XXI] A well in silty water-bearing subsoil is constructed by sinking a well lining, by pumping silt laden water from the subsoil through the lining at points near the well bottom, and by concurrently supplying through the lining filler material (rubble) to the space formed in the subsoil to form a silt free filter bed. A reinforced concrete lining 1 has tubular metallic inserts H near the bottom, water intakes B above the inserts, and rubble supply apertures A above the intakes and preferably below the water table. The intakes are plugged and tubes T jacked through the inserts into the subsoil. Silt laden water from the subsoil is drawn through perforations in the tubes and pumped from the well whilst the rubble is supplied by conduits I connected to the apertures. When the filter bed 2 is completed the intakes are unplugged and the well is ready for service. Should the filter bed silt up, the silt may be removed by means of the tubes. After completion of the filter bed the tubes may be removed and the inserts plugged.
Patent GB-725668-A (GB)
Title: Method and apparatus for drying wound packages of filamentary material
IPC: F26B15/14
Filed: 1953-01-22
Abstract: 725,668. Dielectric heating. AMERICAN VISCOSE CORPORATION. Jan. 22, 1953 [Dec. 3, 1952], No. 1869/53. Class 39 (3). [Also in Group XIII] In the drying of annular wound packages of filamentary material by dielectric heating the packages 30 having covers to maintain a vapour blanket around the external layers and prevent uneven shrinkage, are carried on support assemblies 7 of a conveyer 6 between woven metallic screen electrodes 20, connected to a radio frequency oscillator 19 of which the voltage of the field may vary from 3,000 to 25,000 volts and the frequency range from 1 to 50 or more megacycles. The packages are supported on perforated platforms 13 supported by posts 14, the platforms and posts being of a low loss synthetic resin such as a copolymer of styrene and divinylbenzene and the perforations allowing correction currents. To obtain an approximately constant potential along the electrodes a shorting stub 21b is provided. The assemblies 7 have gears 17 which engage a rack 18 to rotate the supports and packages during drying.
Patent GB-1404917-A (GB)
Title: Face-to-face woven pile fabric
IPC: D03D27/10
Filed: 1974-01-15
Abstract: 1404917 Face-to-face pile fabrics FLORTEXTILIEN KARL-MARX-STADT VEB 15 Jan 1974 [15 Jan 1973] 01877/74 Heading D1K A face-to-face pile fabric has pile yarns provided in warpwise rows, the first row have pile yarns 1, 2 in the same dent, the next row having pile yarns 1, 2, 9, 10 in the same dent and the third row again having pile yarns 1, 2 in the same dent. This is said to provide weftwise support to the tufts. The base fabric is a 2 x 2 rib weave. There are pileless warp rows between the piled rows.
Patent GB-1039040-A (GB)
Title: Improvements in heat sensitive recording materials
IPC: B41M5/32
Filed: 1965-01-15
Abstract: 1,039,040. Thermographic materials. R. KORESKA, [trading as W. KORESKA] Jan. 15, 1965 [Jan. 16, 1964], No. 1881/65. Heading G2C. A heat sensitive material comprises a support and a heat-sensitive layer containing a water-insoluble thiourea derivative (or one less soluble than 5 grams per litre of water) and an equally water-insoluble heavy metal salt, the cation of which is capable of forming a coloured sulphide. N, N<SP>1</SP> -diphenylthiourea is the specified thiourea derivative and lead stearate is the specified salt. The heat-sensitive layer may also contain kaolin and oxalic acid.
Patent GB-1518733-A (GB)
Title: Digital pulse generating system and digital reluctance tachometer
IPC: G01P3/48
Filed: 1976-01-19
Abstract: 1518733 Tachometers BURROUGHS CORP 19 Jan 1976 [18 Feb 1975] 01929/76 Heading G1N A tachometer comprises a toothed disc 35 attached to a rotatable shaft 37 and a housing member 45 having an opening receiving the disc 35, the periphery of the opening being formed with teeth, the disc 35 and the housing member providing when the disc 35 is rotated a variable reluctance path. The housing 45 is provided with a pick-up coil 50 which may, as shown, be provided with a source 58 of power. If the number of teeth on the disc and housing member are equal that number of cycles are induced in the coil 50 per revolution of the shaft. If however the number of teeth are unequal the number of cycles induced per cycle comprises the multiple of the separate numbers of teeth. A detector circuit Fig. 5 (not shown) detects the approximate points in each cycle in the coil when the reluctance begins to decrease and increase and from these two points gives a squared wave, pulsed output. The disc may be mounted between two sets of teeth Fig. 1 (not shown).
Patent GB-714189-A (GB)
Title: Antibiotic and method of producing it
Filed: 1952-01-24
Abstract: Nystatin, an antibiotic effective against fungi, is produced by cultivating the micro-organism Streptomyces Noursei, a description of which is given, in a sterile liquid nutrient medium containing sources of assimilable carbon and nitrogen, and isolating the nystatin so formed, preferably from the mycelium.  Suitable carbon sources are polyhydric alcohols, e.g. glycerol, and mono-, di- and poly-saccharides, e.g. glucose, dextrose, maltose and lactose in the pure or impure form.  Suitable nitrogen sources are (NH4)2SO4, protein degradation or hydrolysis products, e.g. tryptone and peptone, yeast extract, brewer's yeast, malt extract, casein digest, soybean digest and corn steep liquor.  Essential salts are those of sodium, potassium, magnesium, iron and calcium, e.g. sodium chloride, potassium chloride, ferrous sulphate, dibasic potassium phosphate, magnesium sulphate and calcium carbonate.  The antibiotic is produced by both surface (5-7 days) and submerged (3-4 days) aerobic cultivation at 28 DEG  C. and pH6.5-7.5 preferably 7.0-7.2.  The nystatin is recovered by solvent extraction: (a) the harvested surface growth is heated to 70-72 DEG  C. (may be omitted) pressed, and the mycelium extracted several times with methanol.  The combined extracts are cooled to 0.5 DEG  C. and centrifuged, 0.3-2 mols. of ethyl or amyl acetate are added to the methanol solution and the precipitate discarded; 4-5 vols. of ethyl acetate or amyl acetate are added, and the precipitated nystatin is washed with 0.85 per cent NaCl in methanol, reprecipitated from the methanol solution by the ethyl acetate; again dissolved in methanol, and finally is reprecipitated with ethyl ether.  n-Butanol, ethanol, n-propanol, isopropanol or a mixture of equal parts methanol and ethanol may be used in place of the methanol; (b) the whole culture is extracted with n-butanol, the extract cooled to 0-5 DEG  C., centrifuged, the n-butanol removed in vacuo below 45 DEG  C., the residue extracted with methanol and treated as above with ethyl acetate.  An antibiotic resembling actidione is also present in the n-butanol extracts. Nystatin powder is stable at 0 DEG  C., slightly soluble in methanol, 65-70 per cent ethanol, wet butanol, 70 per cent acetone, propylene glycol, ethylene glycol monomethyl ether and water at pH2-5 and 8-9; less soluble in 95 per cent ethanol, butanol and acetone; insoluble in ether, chloroform, ethyl acetate, amyl acetate, benzene, petroleum ether and water (pH7); contains nitrogen; aqueous solutions of pH2 or 9 unstable; the antifungal spectrum of nystatin and the infra-red absorption spectrum of nystatin is also referred to.
Patent GB-292042-A (GB)
Title: Process for the production of a cosmetic preparation
IPC: A61Q19/10
Filed: 1928-01-21
Abstract: 292,042. Fairweather, W. C., (Leichner, S. L.). Jan. 21, 1928. Baths, aerating, perfuming, &c. - A cosmetic preparation for toilet and bath purposes is produced by mixing finely divided rice starch with a carbonate, or carbonates, and an acid, or acids, in a dry state with the addition of perfume. It is preferred to employ several carbonates, one of which should be crystalline.
Patent GB-979312-A (GB)
Title: Improvements in or relating to the manufacture of pipes,tubes and like hollow bodies
IPC: F16L9/18
Filed: 1962-01-19
Abstract: 979,312. Making pipes. DRIAM S.A. Jan. 19, 1962 [Jan. 19, 1961], No. 2057/62. Heading F2P. [Also in Divisions B3 and F4] In a method of manufacturing a multichamber pipe, tube or like hollow body a first strip is twisted about its central longitudinal axis to a helical form and one or more further strips are fed obliquely to the longitudinal axis of the first strip and wound about it in such a manner that their pitches correspond to the pitch of the first strip. As shown in Fig. 1, two strips 3, 4 are wound around the twisted first strip 2 so that the longitudinal edges 5, 6 can be welded to the longitudinal edges 7, 8 and 9, 10. Alternatively or additionally, longitudinal strips 12, 19, Fig. 4, may be welded to the helical surfaces of the first strip 2 to form the or further chambers. The strips may have a cross-section other than rectangular, e.g. strips thicker in their central region. The hollow body may be used as a structural element, e.g. in aircraft, or motor vehicles, or as a boiler or heat exchanger tube.
Patent GB-555390-A (GB)
Title: Improvements in and relating to the production of sponge rubber
IPC: C08J3/24
Filed: 1942-02-16
Abstract: 555,390. Sponge rubber. BRITISH BOOT, SHOE & ALLIED TRADES RESEARCH ASSOCIATION, RUSS, A. COLIN-, TIMPSON, A. G., RESEARCH ASSOCIATION OF BRITISH RUBBER MANUFACTURERS, WILLOTT, W. H., and BUNCE, F. H. Feb. 16, 1942, No. 2063. [Class 70] Sponge rubber is prepared by mixing unvulcanized rubber with charcoal obtained by carbonizing leather at temperatures below 420‹ C. and preferably, in the case of vegetable tanned sole leather, at 255-275‹ C. for some hours. The mixture together with vulcanizing agents, fillers &c., is vulcanized by heating under conditions which allow of expansion in volume.
Patent GB-698352-A (GB)
Title: Improvements in or relating to electric surge diverter arrangements
IPC: H01T4/20
Filed: 1951-01-26
Abstract: 698,352. Protective arrangements. QENERAL ELECTRIC CO., Ltd., and JONES, H. F. Jan. 8, 1952 [Jan. 26, I951], No. 2076/51. Class 38 (iv). A surge diverter of the multiple spark-gap type comprises a stack of metal discs 10 arranged in pairs which are separated by rings 11 of non-linear resistance material, the discs of each pair being provided with opposed protuberances 15 which form a spark-gap and the voltages across the several gaps being equalized by shunt resistors (non-linear or otherwise) 12, which may be in the form of either peripheral rings serving to space the discs of each pair, or pillars arranged between the peripheral portions of the two discs. Sparkgaps 14 may also be provided between adjacent pairs of discs. The several discs may have central protuberances 13, serving to centre the rings 11. The shunt resistors may be replaced by capacitors.
Patent GB-534352-A (GB)
Title: Improvements in moulds for casting pigs and pigs cast therefrom
IPC: B22D5/00
Filed: 1940-02-02
Abstract: 534,352. Moulds. ASHMORE, BENSON, PEASE & CO., Ltd., and BROWN, W. R. Feb. 2, 1940, No. 2082. [Class 83 (i)] A pig-mould has ribs 5 on its side walls 3 so that pigs cast therein may be readily broken. There may be one or more ribs 5, the bottom 9 is flat, so that the pigs may be stacked, and lugs 2 may be provided for forming a number of moulds into a chain. The ribs hinder metal poured into one end of the mould from splashing over at the opposite end.
Patent GB-174602-A (GB)
Title: Improvements in electric motor control systems and apparatus
IPC: B60L15/20
Filed: 1922-01-24
Abstract: 174,602. Compagnie Electro - MÚ- canique. Jan. 26, 1921, [Convention date]. Electromagnetic relays for accelerating a direct current motor. Each relay has two windings, a series winding in the power circuit, and a fine wire winding in the control circuit. The individual relays are constructed as shown, with a core 13 and U-shaped magnetic circuit 11 for the series winding 14, a pot magnet 15 for the fine wire winding 16, and a guided brass rod 19 carrying an armature 18 subject to the winding 16 and an armature 24 subject to the winding 14, the lower armature being adjustable by a screw 23. Disc contacts 26 are mounted on and insulated from the rod 19. The master controller and the accelerating contactors are provided with magnetic blow-outs.
Patent GB-228187-A (GB)
Title: Improvements in or relating to photographic dusting-on processes
IPC: G03F7/28
Filed: 1925-01-24
Abstract: In a photographic dusting-on process, the exposed gelatine or like surface is dusted with lycopodium or purified peat powder, or with a powdered absorbent vegetable material impregnated with resin or wax or both substances in combination with colouring matter.  The powders used may be obtained by treating a suitable coloured or colourless absorbent vegetable powder such as peat, lycopodium, vegetable charcoal powders, or powdered sandal wood or iris root with a substance containing resin or wax alone or in combination with colouring materials such as dyes.  The resin or wax may be in solution and the treated mass dried and pulverized. The purified peat powder or lycopodium may be used alone for brown or light-coloured tones or in dyed form, and as they contain naturally a wax-like material, the addition of resin or wax is unnecessary.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use, in preparing the powders, of powdered bistre or mineral colours such as ultramarine, or organic dyes, not soluble in water, as the basic absorbent materials.  This subject-matter does not appear in the Specification as accepted.
Patent GB-260143-A (GB)
Title: Improvements in methods of melting iron and other metals
IPC: F27B1/02
Filed: 1926-01-25
Abstract: 260,143. Dyer, Y. A. Jan. 25, 1926. Shaft furnaces; charging.-Pig or scrap iron or other metal is melted in a cupola or like furnace 10, which contains a charge consisting of thin layers of fuel alternating with relatively thick layers of metal, by hot gases generated in a separate combustion chamber 15. The latter communicates through ports 20 with a wind-box 19 to which a blower supplies air or oxygen under a pressure of from “ to 1¢ lbs. per square inch, the blower also delivering air to roof flues 22 from which it passes down through pipes 23 and enters the box 19 in a heated condition. A partition 14 divides the combustion chamber 15 from an outlet flue 16, 26, serving for the passage of the hot gases to a belt 27 surrounding the shaft 10 and communicating therewith by ports 28, openings 32 from the pipes 23 being provided for the admission of a further supply of air to the flue 26. The partition 14 may extend upwardly to the roof of the combustion chamber, in which case openings 17 are provided for the passage of the hot gases.
Patent GB-964043-A (GB)
Title: Improvements in or relating to welding apparatus
IPC: B23K25/00
Filed: 1962-01-22
Abstract: 964,043. Welding by fusion. VYSKUMNY USTAV ZVARACSKY MHD. Jan. 22, 1962 [Feb. 3, 1961], No. 2231/62. Heading B3R. In an electro-slag welding machine in which cooled melt retaining plates are located on each side of the seam being welded, the plates are resiliently mounted and individually adjustable to compensate for irregularities in the work. The retaining plates 34 may be one piece or articulated two or three-piece plates. The front retaining plate 33, Fig. 2, has grooves in which are located the curved faces of replaceable shoes 30 attached to pressure plates 28 slidably mounted on horizontal dovetails on the sides of a member 26 pivotally mounted on a support arm 25. The ends of a horizontal bar 27 carried on a pin in the arm 25 bear against the pressure plates 28. The angular position of the pressure plates 28 in a vertical plane and so the points at which the shoes 30 apply pressure to the retaining plate 33 is adjusted by a hand screw 32. The arm 25 is adjustable about a horizontal axis in a sleeve 20 having a locking screw 19. The sleeve 20 is slidably non-rotatably and resiliently mounted on a rod 13 which is adjustably locked in a clamping sleeve 17 traversable horizontally and parallel to the work on a rod 22 carried by the main vertically movable slide of the machine. The tension of a spring 15 bearing on the arm 25 is varied by a hand wheel. The rear retaining plate 34, Fig. 3, is similarly supported on a rear member 8, which is angularly adjustable by a double-ended screw 12 about its pivot 9 on the rear support arm 7. Links 6 suspend the support arm 7 from a bar 4 attached to a blade 36 passing through the seam and adjustably mounted on the main slide of the machine. A spring-pressed plunger 3 acts through a bell-crank 5 on the arm 7 to press the retaining plate 34 against the work. By changing the shoes 30, 37 and the retaining plates 33, 34 the machine may be adapted for welding other types of joint, e.g. peripheral joints between the ends of cylindrical workpieces.
Patent GB-1537070-A (GB)
Title: Colour television tube assemblies
IPC: H01J29/51
Filed: 1976-01-21
Abstract: 1537070 Colour television tubes MATSUSHITA ELECTRONICS CORP 21 Jan 1976 [24 Jan 1975 31 Jan 1975] 02247/76 Heading H1D In a self-convergence colour television tube having an assembly of three in-line guns, the convergence of which is produced, without a dynamic deflection circuit, by the use of a pincushion-shaped horizontal deflection magnetic field and a barrel-shaped vertical deflection magnetic field, the resulting distortion of the beam spot on the screen, i.e. horizontally elliptical towards all the screen boundaries (Fig. 1, not shown)-is modified to render it visually more acceptable by providing the beams with an initial vertically elliptical cross-section, by the use of vertically elliptical gun control grid apertures, and subsequent lens electrodes differently dimensioned along their horizontal and vertical axes, to provide differing horizontal and vertical convergence, thereby to provide a beam spot distortion distribution over the screen as shown in Fig. 4. In Fig. 6, the elliptically apertured control grid 1 is followed by an electrode 40 which has an apertured protruding portion 41 with smaller horizontal dimension h x  than vertical dimension h y . In a further arrangement (Figs. 11 and 12, not shown) the plate 40 is apertured only opposite the aperture in the protruding portion 41. In Fig. 8, the inequality of horizontal and vertical convergence action is produced by the pair of vertically extending members 92, 93 flanking the electrode aperture. In a further arrangement (Figs. 9 and 10, not shown) two opposed electrode plates (95, 100) have oppositely disposed elliptical apertures (96, 101).
Patent GB-105218-A (GB)
Title: Improvements in Fluid Cooled Internal Combustion Engines.
Inventor: BUGATTI ETTORE
IPC: F02F1/16
Filed: 1917-02-16
Abstract: 105,218. Bugatti, E. March 27, 1916, [Convention date]. Addition to 100,298. Cylinders, cooling. -A rectangular water jacket d has its longitudinal joint made by clamping its edges against a longitudinal web r on the cylinder. The end joints are made water-tight by pressing a grummet n into the corner by half-rings p with inclined faces. The part of the jacket around the head of the cylinder b<1> is cast.
Patent GB-668232-A (GB)
Title: Improvements in or relating to thermionic valve oscillators and selective amplifiers
Inventor: BRANDON PERCY SAMUEL
IPC: H03B5/00
Filed: 1950-01-30
Abstract: 668,232. Valve amplifying and generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 4, 1950 [Jan. 30, 1950], No. 2413/60.. Class 40 (vi). In a feed-back amplifier or oscillator employing two or more valves and having a negative feed-back connection from the anode of a second valve to the cathode of the first positive feed-back is applied to a grid further from the cathode than the control grid of the first valve. Negative feed-back is applied from the anode of valve V2 over resistor RF to the cathode resistor RC of valve VI, while positive feedback is applied over path PFB to the outer (i.e. suppressor) grid of valve V1. Variations in the potential of the suppressor grid of valve V1 primarily affects the distribution of cathode current between the screen grid and anode so that the cathode potential does not change appreciably. This allows the use of a large resistor RC in the cathode lead and a correspondingly large resistor RF thereby increasing the gain of the amplifier and thus the gain without feed-back. It is stated that amplifiers are increased in selectivity while oscillators maintain more constant amplitude on larger frequency ranges.
Patent GB-838402-A (GB)
Title: Method of recycling reactants and recovering polymer in polybutene manufacture
Inventor: CAHN ROBERT PAUL
IPC: C08F10/00
Filed: 1958-01-24
Abstract: In a continuous process for the polymerization of isobutylene at - 112 DEG  to 104 DEG  F. in the presence of a Friedel-Crafts catalyst and an inert non-polar solvent for the polymer, the polyisobutylene is subsequently separated by flashing the reaction mixture at elevated pressure in at least two stages, the pressure in each stage being successively reduced.  The recovered isobutylene and solvent are admixed with fresh feed, purified and recycled.  The first flashing may be at 15-75 p.s.i.g. and 150-250 DEG  F., and the second flashing at 0-15 p.s.i.g. and 200-300 DEG  F.; optionally steam stripping at atmospheric pressure may finally be effected.  The solvent used may be an alkane, an alkyl halide or carbon disulphide and in the examples hexane is used with aluminium chloride as catalyst.  Catalyst may be destroyed with water, caustic or alcohol. A part of the bottoms from the first stage may be used as viscosity index controller in high-boiling petroleum oils such as lubricating oils. Specification 798,015 is referred to.
Patent GB-1058797-A (GB)
Title: Improvements relating to image-transfer process
IPC: C08F2/46
Filed: 1964-01-20
Abstract: 1,058,797. Image transfer process. E.I. DU FONT DE NEMOURS & CO. Jan. 20, 1964 [Jan. 24, 1963], No.2470/64. Heading G2C. Images are transferred by (A) placing into interfacial contact the surfaces of an imagereceptive element and an element which is an imagewise polymerized solid layer consisting of (1) underexposed or unexposed areas comprising (a) at least one non-gaseous ethylenically unsaturated compound containing at least one terminal ethylenic group, having a boiling point above 100‹C., at normal atmospheric pressure and being capable of forming a polymer by photoinitiated addition polymerization, and (b) a diffusible colorant or diffusible colour former that is capable of diffusing from the underexposed areas but not from the exposed areas of the solid layer to the image receptive element (2) complementary adjoining coplanar exposed image areas comprising an addition polymer of the above said compound and said colorant (B) heating e.g. between 50‹-300‹C. at least one of the elements while they are in surface contact to a temperature at which the colorant selectively transfers by diffusion out of the underexposed areas and (C) separating the two surfaces. Multiple copies may be obtained from a single imagewise exposed layer. The imagewise exposed layer employed are preferably imagewise exposed layers as described in Specification 1, 058, 798.
Patent GB-493737-A (GB)
Title: Improvements relating to anti-slip devices for use in conjunction with pneumatic-tyred driving wheels of power-driven agricultural and other vehicles
IPC: B60C27/08
Filed: 1938-01-26
Abstract: 493,737. Wheel tyres. COLLINS, C. M., and HENDERSON, W. M. Jan. 26, 1938, No. 2485. [Class 144 (ii)] A detachable tread band for use on pneumatic tyres of agricultural and other vehicles comprises a series of narrow shoes 1 having radially-projecting strakes 3 which are restrained from rocking in ground-engagement by means of levers 4 projecting from the sides of each shoe and pivoted to the adjacent shoe.